Improvement in tube-gear for oscillating engines



rre STATES TATnNfr OFFICE.

HENRY T. CARTER, OF PORTLAND, MAINE.

IMPROVEMENT IN TUBE-GEAR FOR OSCILLATING ENGINES.

Specification forming part of Letters Patent N0. 52,677, dated February20, 1866.

To all whom t may concern:

Be it known that I, HENRY T. CARTER, of Portland, in the county ofCumberland and the State of Maine, have invented a new and ImprovedValve-Gear for Oscillating Steam Engines; and I do hereby declare thatthe following isa full, clear, and exact description thereof, which willenable others skilled in the art to lnake and use the saine, referencebeing had to the accompanying drawings, forniing a part of thisspeciiication, in which- Figure 1 is a sectional end elevation of thisinvention, Fig. 2, a longitudinal eleva-tion of the saine, and Fig. 3 anisolated view of the operating-link.

Similar letters of reference indicate like parts. 5

This invention consists in the arrangement of a link iii combinationwith a valve-stem of an oscillating steam-engine in such a manner thatby-tlie combined effect of this link and the oscillation of the cylinderthe requisite re'- ciprocating niotion is imparted to the valvestem andthe valve is moved at proper intervals.

A represents an ordinary stearnlcylinder, which is linng npoiitruniiioiis B B', which have their bearings iii suitable standards O C,which are secured to a bed-plate, as coniinoii, or are otherwisearranged in such amaniicr as to allow the cylinder to oscillate freelyin either direction. The piston-rod D connects directly to a wrist-pinof the ldouble crank E, which revolves the shaft F and balance-Wheel Gin the usual manner for oscillating` engines.

Attached to the cylinder and in line with the trunnions B B is thevalve-chest H and the stem I, operating the valve. The stem I extendsthrough a lip or guide on the cylinder-Bange, asis clearly shown in thedrawings. By this arrangement the valve-stem is guided in itsup-and-down motion, thuspreventing its bending or binding` when theengine is in motion.

Attached to the valve-stein I is a boX, J,

which slides in a link, K, as is shown particularly in Fig. l. The curveof this link is on a radius -of the distance from the center ofthe linkto the center of the steam triinnion or oscillation. Rigidly attached tothis lilik is a trnnnion or rocking shaft, which rocks in snitablebearings in the frame. Upon the end of this shaft is affixed a lever, L,which slideson a guide, N.

When the link is on the center or ata right angle with the valve-stein,although tlie cylinder may oscillate, the valve will not move upon itsseat. When the link is placed ecceiitric with the center of oscillation,by tipping it by means of the lever L the oscillation ot' the cylinderand the combined effect of the link will cause the valve to move atproper intervals of the stroke. If the lilik be tipped to the right thebalance-wheel will revolve in a like direction, but if the link betipped in an opposite direction the engine will be reversed.

This valve-gear may be applied to oscillating engines of any desireddescription, whether the cylinder oscillates on a' horizontal orvertical axis.

The advantages of this invention are the simplicity, durability, andcheapness ofthe engine.

The. Letters Patent granted to .m0, No 48,904, and dated the 25th ofJuly, 1865, einbraced this principle, but specified an arm incombination with the link.

I claim as new and desire to secure by Letters Patentl. The arrangementof the slotted .link K, the valve-stein I, and the oscillating cylinderA, all as and for the purposes specified.

2. The 'manner of reversing an oscillating engine by means of theslotted link K, the valve-stein I, the lever L, and the oscillatingcylinder A, as specified.

HENRY T. CARTER.

Witnesses:

WILLIAM H. CLIFFORD, J os. GnRRIsH.

